[PATCH 7/9] mv ":" ":" is like moving nothing from nowhere to nowhere

[Junio C Hamano <gitster@pobox.com>]

Make sure the code can deal with get_pathspec() that returns nothing.
Strictly speaking it may be a user error, but that is not an excuse
to dump core.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
---
 builtin/mv.c |    6 +++++-
 1 files changed, 5 insertions(+), 1 deletions(-)

diff --git a/builtin/mv.c b/builtin/mv.c
index 93e8995..38af9f0 100644
--- a/builtin/mv.c
+++ b/builtin/mv.c
@@ -77,8 +77,12 @@ int cmd_mv(int argc, const char **argv, const char *prefix)
 		die("index file corrupt");
 
 	source = copy_pathspec(prefix, argv, argc, 0);
-	modes = xcalloc(argc, sizeof(enum update_mode));
+	if (!source)
+		die("copying from nowhere?");
+	modes = xcalloc(count_pathspec(source), sizeof(enum update_mode));
 	dest_path = copy_pathspec(prefix, argv + argc, 1, 0);
+	if (!dest_path)
+		die("copying to nowhere?");
 
 	if (dest_path[0][0] == '\0')
 		/* special case: "." was normalized to "" */
-- 
1.7.5.1.290.g1b565